Results 11 to 20 of about 1,328,728 (267)
Thoughts on the Cosmological Principle [PDF]
, 2009 The cosmological principle says that the Universe is spatially homogeneous and isotropic. It predicts, among other phenomena, the cosmic redshift of light and the Hubble law. Nevertheless, the existence of structure in the Universe violates the (exact) cosmological principle.
Schwarz, Dominik +3 more
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The cosmological principle and honeycombs [PDF]
Classical and Quantum Gravity, 2004 We present the possibility that the gravitational growth of primordial density fluctuations leads to what can be considered a week version of the cosmological principle. The large scale mass distribution associated with this principle must have the geometrical structures known as a regular honeycombs.
Criado, C., Alamo, N.
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Holographic principle, cosmological constant and cyclic cosmology [PDF]
Modern Physics Letters A, 2019 The holographic principle provides a deep insight into quantum gravity and resolves the fine-tuning crisis concerning the cosmological constant. Holographic dark energy introduces new ultraviolet (UV) and infrared (IR) cutoffs into quantum gravity which are necessarily strongly related.
Corianò, Claudio, Frampton, Paul H.
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The Local Galaxy Distribution Does Not Violate the Cosmological Principle
The Astrophysical Journal LettersThe cosmological principle, which states that the Universe is statistically homogeneous and isotropic on sufficiently large scales, is a foundational assumption of the standard cosmological model.
Till Sawala
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Testing the cosmological principle with quasars
Astronomy & AstrophysicsThe cosmological principle posits that the universe is homogeneous and isotropic on the large scales. In history, the cosmological principle was confirmed by various cosmological observations from CMB to large scale structure.
Chen Shuangnan +7 more
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Beyond the Cosmological Principle [PDF]
, 2016 Simplifying the Einstein field equation by assuming the cosmological principle yields a set of differential equations which governs the dynamics of the universe as described in the cosmological standard model.
Sundell, Peter
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Supernovae data: Cosmological Constant or ruling out the Cosmological Principle ? [PDF]
, 2000 4 LaTex pagesAnalysed in the framework of homogeneous FLRW models, the magnitude-redshift data from high redshift supernovae yield, as a primary result, a strictly positive cosmological constant.
M. N. CÉLÉRIER +1 more
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A Test of the Cosmological Principle with Quasars
The Astrophysical Journal Letters, 2021 Abstract We study the large-scale anisotropy of the universe by measuring the dipole in the angular distribution of a flux-limited, all-sky sample of 1.36 million quasars observed by the Wide-field Infrared Survey Explorer (WISE). This sample is derived from the new CatWISE2020 catalog, which contains deep photometric measurements at 3.4
Nathan J. Secrest +5 more
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On Under-determination in Cosmology [PDF]
, 2012 I discuss how modern cosmology illustrates under-determination of theoretical hypotheses by data, in ways that are different from most philosophical discussions.
Butterfield, Jeremy, Jeremy Butterfield
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Cosmological principle in Newtonian dynamics
Modern Physics Letters A, 2020 A correspondence between the equivalence principle and the homogeneity of the universe is discussed. In Newtonian gravity, translation of co-moving coordinates in a uniformly expanding universe defines an accelerated frame. A consistency condition for the invariance of this transformation which requires a well-defined transformation for the Newtonian ...
David Benisty, Eduardo I. Guendelman
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